Okuma MULTUS B200II

Est. $350,000 - $500,000 Updated 2026-08-10

Key Specifications

Tool Capacity

20 tools

Rapid Traverse

40/26 m/min (1,575/1,024 ipm), X,Z/Y

standard chuck size

6 in

max machining diameter

600 mm (23.62 in)

max work length

550 / 750 mm (21.65 / 29.53 in)

spindle speed

50~6,000 min⁻¹ [45~5,000 min⁻¹ optional]

Overview

The Okuma MULTUS B200II is a horizontal multitasking machine — a turning center with a milling spindle on a B-axis — at the compact end of the MULTUS B range. It is bought to finish parts complete in one setup rather than to move them between a lathe and a machining center.

The standard chuck is 6 in, while maximum machining diameter is 600 mm (23.62 in). That gap is worth understanding before specifying the machine. The 6 in chuck sets what can be gripped conventionally; the 600 mm figure describes the swing available for fixtured or faceplate-mounted work. Most production on this machine will be chuck-sized parts, with the larger envelope reserved for special workholding.

Maximum work length is 550 mm (21.65 in) or 750 mm (29.53 in) depending on bed configuration, which also determines the footprint — 3,080 mm long on the short bed against 3,620 mm on the long one, both 2,210 mm wide and 2,582 mm tall.

The main spindle runs 50~6,000 min⁻¹ standard, with a 45~5,000 min⁻¹ option, on a Ø140 flat nose or JIS A2-6. The PREX motor is rated 11/7.5 kW (15/10 hp) at the 20-minute and continuous ratings. Those are modest numbers by multitasking standards and they define the work: precision components at controlled depths of cut, not heavy stock removal. The 6,000 min⁻¹ top speed is the counterpart, supporting small-diameter work where surface speed matters more than torque.

Rapids are 40 m/min (1,575 ipm) in X and Z and 26 m/min (1,024 ipm) in Y. A separate Y rapid figure confirms a genuine Y-axis rather than a driven-tool substitute, which is what makes off-center milling, drilling and pocketing possible with the B-axis head.

Tool capacity is 20, and on a done-in-one machine that is the constraint most likely to bite. A part needing a full turning set plus drills, taps and mills can consume the magazine on its own, which limits how many jobs stay loaded at once.

A W specification adds a second spindle for back-end work. The B200II suits medical, instrument and precision contract shops working small, complex components.

Full Specifications

Parameter	Value
Standard Chuck Size	6 in
Max Machining Diameter	600 mm (23.62 in)
Max Work Length	550 / 750 mm (21.65 / 29.53 in)
Spindle Speed	50~6,000 min⁻¹ [45~5,000 min⁻¹ optional]
Spindle Nose	Ø140 flat [JIS A2-6]
Spindle Motor	PREX 11/7.5 kW (15/10 hp), 20 min/cont
Rapid Traverse Rate	40/26 m/min (1,575/1,024 ipm), X,Z/Y
Tool Capacity	20 tools
Machine Dimensions	3,080 × 2,210 × 2,582 mm (121.26 × 87.01 × 101.65 in); 3,620 × 2,210 × 2,582 mm (142.52 × 87.01 × 101.65 in)
Spec Extension	W (second-spindle specification)

Specifications sourced from okuma.co.jp — verified 2026-08-09

Strengths & Limitations

Strengths

Milling spindle on a B-axis plus a genuine Y axis — confirmed by its own 26 m/min (1,024 ipm) rapid figure — allows off-center milling, drilling and pocketing without moving the part
Maximum machining diameter of 600 mm (23.62 in) gives swing well beyond the 6 in standard chuck for fixtured or faceplate-mounted work
Choice of 550 mm (21.65 in) or 750 mm (29.53 in) maximum work length to suit the part family
Spindle range of 50~6,000 min⁻¹ supports small-diameter work where surface speed matters more than torque
Compact for a multitasking machine at 3,080 × 2,210 × 2,582 mm on the short bed
A W specification adds a second spindle for back-end work

Limitations

The PREX spindle motor is rated 11/7.5 kW (15/10 hp) at the 20-minute and continuous ratings — modest by multitasking standards, so this is precision work at controlled depths of cut, not heavy stock removal
20 tool pockets is the constraint most likely to bite: a single part needing a full turning set plus drills, taps and mills can consume the magazine on its own
The 6 in standard chuck sets what can be gripped conventionally, so reaching the 600 mm envelope requires special workholding
Y rapid of 26 m/min (1,024 ipm) lags the 40 m/min (1,575 ipm) available in X and Z
Bed configuration fixes both work length and footprint — 3,080 mm against 3,620 mm long — and is not changed later

Best For

Medical, instrument and precision contract shops working small, complex components Parts finished complete in one setup rather than moved between a lathe and a machining center Chuck-sized turned parts needing off-center holes, flats and pockets from the B-axis head Small-diameter work where the 6,000 min⁻¹ ceiling supplies the needed surface speed Shops with limited floor area taking on multitasking work for the first time

Frequently Asked Questions

01 Why is the chuck 6 in when maximum machining diameter is 600 mm?

They describe different things. The 6 in standard chuck sets what can be gripped conventionally; the 600 mm (23.62 in) figure describes the swing available for fixtured or faceplate-mounted work. Most production on this machine will be chuck-sized parts, with the larger envelope reserved for special workholding.

02 How much material can the B200II remove?

Less than the machine's capability envelope might suggest. The PREX spindle motor is rated 11/7.5 kW (15/10 hp) at the 20-minute and continuous ratings, which defines the work as precision components at controlled depths of cut rather than heavy stock removal. The 6,000 min⁻¹ top speed is the counterpart, favouring small-diameter tooling.

03 Does the B200II have a real Y axis?

Yes. A separate Y rapid figure of 26 m/min (1,024 ipm), against 40 m/min (1,575 ipm) in X and Z, confirms a genuine Y-axis rather than a driven-tool substitute. Combined with the B-axis milling head, that is what makes off-center milling, drilling and pocketing possible.

04 What does the W specification add?

The W specification adds a second spindle for back-end work, so a part can be transferred and finished on the far end without an operator re-chucking it. On a machine bought specifically to complete parts in one setup, it is the option that closes the loop.

05 Is 20 tools enough for done-in-one machining?

It is the tightest specification on the machine. Tool capacity is 20, and on a done-in-one platform a part needing a full turning set plus drills, taps and mills can fill the magazine by itself. The machine works best on part families that share tooling, so several jobs can stay loaded at once.